CBSE > Class 10 > Science | CBSE Board | Homework Help

Decomposers have important role in decompose the dead organisms into a simpler inorganic materials . These type of play a important role in ecosystem 🤗

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Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

💓ⓀⒶⓋⓎⒶ࿐💓Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.

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Why is only KMnO4 selected to oxidise ethanol?

Posted by Chhavi Jindal 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Dhwani Panchal 3 years, 1 month ago

KmNo4 is acts a good oxidizing agent

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Kuldeep Kushwaha 3 years, 1 month ago

Kmno4 is a very strong oxidizing agent

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Rekhanshi Vasudev 3 years, 1 month ago

Because it acts as a good oxidizing agent

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ANSWER

What do the following indicators turn when added to a base or alkali

Posted by Sneha Tirkey 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Dhwani Panchal 3 years, 1 month ago

Litmus paper turns to red to blue

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Differentiate between corrosion and rancidity

Posted by Ayushi Upadhyay 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Dhwani Panchal 3 years, 1 month ago

1. Corrosion - if a metal is contact to air get corroded its lusture is out on this metal and dust particles are get on the metal. These reaction is called corrosion. 2. Rancidity- this reaction is oxidize to food the food have smell is bed because food is contact to oxygen and oxidize these is the reason food have bed smell . These reaction is called Rancidity..

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Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

💓ⓀⒶⓋⓎⒶ࿐💓 CORROSION:---is a process where metals are attacked by moisture, acids etc. Some daily examples of corrosion that you may have observed are the black coating that develops on articles made of silver or the green coating on copper articles. Corrosion that occurs on materials made of iron is ‘rusting‘. RANCIDITY :---Food turns rancid when the fats and oils within them get oxidized and the taste and smell of the food changes. Oxidation of fats generates highly reactive molecules in the rancid food which is responsible for the unpleasant odour and flavour. These chemical reactions also reduce the nutrition of the food. Some studies show that rancid food can have harmful health effects if consumed.

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Shagun Yadav 3 years, 1 month ago

Corrosion is oxidisation of METAL in presence of mosture and air Rancidity is oxidisation of FAT & OIL, taste of food change.

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ANSWER

Mixing of concentrated acid or base with water is a Exothermic or Endothermic process? And how?

Posted by Utkarsh Yadav 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Dhwani Panchal 3 years, 1 month ago

Highly exothermic because the reaction is performed by the acid these reaction is exothermic in nature.

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Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

💓ⓀⒶⓋⓎⒶ࿐💓 Mixing concentrated acids or bases with water is a highly exothermic process as heat is expelled out. INSTAGRAM ID:------- Kavyasingh66797

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Faiqa . 3 years, 1 month ago

Exothermic because it addition of acid to water generates a lot of heat

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ANSWER

which type of nutrition cascutta have

Posted by Divya Kumari 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Aditi Malik 3 years ago

Parasitic nutrition

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Dhwani Panchal 3 years, 1 month ago

Cuscutta have parasite nutrition

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Kuldeep Kushwaha 3 years, 1 month ago

Parasite

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Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

💓ⓀⒶⓋⓎⒶ࿐💓 Cascutta have Parasitic nutrition.

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Tauqeer Khan 3 years, 1 month ago

Parasitic nutrition

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ANSWER

What is the electric magnet

Posted by Uday Rajput 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Dhwani Panchal 3 years, 1 month ago

Electric magnet is just a conductor to attract and repels the things these is like electromagnetic type work

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Shubham Pathak 3 years, 1 month ago

The electromagnet is nothing but a conductor which act as a temporary magnet when we current from it

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Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

💓ⓀⒶⓋⓎⒶ࿐💓An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole in the center of the coil. INSTAGRAM ID:----- Kavyasingh66797

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Tauqeer Khan 3 years, 1 month ago

When electric current pass through a iron article it behave like a magnet this type of magnet is known as electric magnet

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ANSWER

A 9ohm resistor is cut into 3equal part and connected in parallel. Find the equivalent resistance of the combination

Posted by Tanushree Jagadish 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Radhika Malav 3 years, 1 month ago

1ohm

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Dhwani Panchal 3 years, 1 month ago

9ohm resistor is cut in 3 equal part to just - 3ohm And in parallel is 1/R= 1/3+1/3+1/3=1 ohm resistance

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Shubham Pathak 3 years, 1 month ago

Ans:- 1 ohm As, Accor. To question Now each resistor = 3ohm And, when connected in parallel then , 1/R = 1/3 + 1/3 + 1/3 = 3/3 = 1ohm

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Lavish Sharma 3 years, 1 month ago

1 ohm

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Yashvi Patel 3 years, 1 month ago

9 ohm + 9 ohm + 9ohm 27

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ANSWER

If we put ethane or ethene together so how can we identify that how it will separate?

Posted by Ankita Shrivastva 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

💓ⓀⒶⓋⓎⒶ࿐💓 Therefore, to differentiate between ethane and ethene, we use the bromine water test. INSTAGRAM ✨✨ID:----Kavyasingh66797✨✨

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Vivek Prajapati 3 years, 1 month ago

Where

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If we add the X compound in chlorine gas than it will make Y compound which help in removing hardness of water . Identify the X and Y compound and make a chemical reaction.

Posted by Ankita Shrivastva 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Gautami Moharana 3 years, 1 month ago

X is Can(OH)2 or lime water And Y is CaOCL2 or bleaching powder

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Arush Singh 3 years, 1 month ago

X = lime water / Ca(OH)2 Y=Bleaching Powder / CaOCl2 Ca(OH)2 + Cl2 = CaOCl2

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ANSWER

Word equation

Posted by Vishal Kumar 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Dhwani Panchal 3 years, 1 month ago

The equation is represent by words . Key points have word equation. 1. Who is reactant . 2. Who is met to react . 3. Which product is produced.

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Tauqeer Khan 3 years, 1 month ago

It's to write any reaction in words instead of there symbol

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ANSWER

HCl+H2o__________

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Dhwani Panchal 3 years, 1 month ago

H3o+Cl and the hydronium ion is produced

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Shubham Pathak 3 years, 1 month ago

H3o +cl Which is nothing but hydronium ion formed due to dilution

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Ankita Shrivastva 3 years, 1 month ago

Dillite hydrochloric acid

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Mudita Mali 3 years, 1 month ago

H3o + cl

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S Singh 3 years, 1 month ago

Dilute HCL

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ANSWER

How many types of bond present in carbon?

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Madhu Singh 3 years, 1 month ago

Multiple bond

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Dhwani Panchal 3 years, 1 month ago

3 bond . 1. Single bond. 2. Double bond. 3. Triple bond.

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Ankita Shrivastva 3 years, 1 month ago

Multiple bond

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Emil Leo 3 years, 1 month ago

Multiple bond

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Raushan Kumar 3 years, 1 month ago

Multiple bond between in carbon

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Nacl+H2O __

Posted by Aryan Abhisek Lx A 13 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Dhwani Panchal 3 years, 1 month ago

Nao+HCl is produced [Sodium oxide and hydrochloric acid]

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Shubham Pathak 3 years, 1 month ago

It forms salt solution But if you pass it through Electrolysis then, Nacl -(in the presence of) -> Naoh + Hcl

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Aarti Mahato 3 years, 1 month ago

NaCl + H2O -------------> HCl + NaOH

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S Singh 3 years, 1 month ago

Salt solution

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ANSWER

Why is the formula of lead nitrate not Pb(No3)4

Posted by Pari .. 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Pari .. 3 years, 1 month ago

But lead has valency 4

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Sonal Agarwal 3 years, 1 month ago

Formula of lead nitrate is Pb(NO3)2

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Ronak Mittal 3 years, 1 month ago

Pb(NO3)4 is 'Lead (IV) Nitrate'. Pb(NO3)2 is 'Lead Nitrate' or 'Lead Dinitrate'

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Prakash Jaiswal 3 years, 1 month ago

I don't know

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Abhibav Amrit 3 years, 1 month ago

Hiii

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ANSWER

A hot object has been touched by you draw a diagram that shows the steps that result in a response such as a hasty hand pull back.

Posted by Anshika Jhajhria 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Tejasvini Yadav 3 years, 1 month ago

✨️ reflex action are the those automatic immediate response of the nervous system in our body to a stimulus are called reflex action. ✨️ The Patheory or route taken by nerve impulse in a reflex action is a called reflex arc. ✨️ the reflexes are reflex action in which spinal cord is evolved. ✨️ the reflex action which involved brain are called spinal reflex action

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Difference between pollination and fertilisation

Posted by Riya Verma 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Shaik Irfan 3 years, 1 month ago

What is ohmslow

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X -----> 2PbO + Y + O2. In the above reaction write the name of compound X and Y and also what is the colour of the compund X and Y?

Posted by Dhanisha Rathore 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Aadarsh Shahu 3 years, 1 month ago

Pb(No3)2+∆=Pbo+No2+O2 X=lead nitrate Y=Nitrogen dioxide

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Vaishnavi Vyas 3 years, 1 month ago

X- lead nitrate...Pb(NO3)2 Y- NO2 Colour of X is Colourless and colour of Y is brown fumes

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ANSWER

3rd chapter notes (bio)

Posted by Bhumi Gothwal 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Pari .. 3 years, 1 month ago

👎

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ANSWER

Si unit of energy

Posted by Anurag Anand 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Aadarsh Shahu 3 years, 1 month ago

Joule

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Harsh Yadav 3 years, 1 month ago

Joule

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Dhanisha Rathore 3 years, 1 month ago

Joule

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Trisha Verma 3 years, 1 month ago

Joule

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Aariz Salim 3 years, 1 month ago

Aariz

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ANSWER

How much time should I study to get 95% in boards

Posted by Divya Kumari 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Rupali Shukla 3 years ago

Hours is not important. How much study you are doing thats quite important. Smart work 😎 or hardwork 🥵

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Tejasvini Yadav 3 years, 1 month ago

12 hours

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Aadarsh Shahu 3 years, 1 month ago

6-7 hrs

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Vishnu Singh 3 years, 1 month ago

Thanks me later

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Vishnu Singh 3 years, 1 month ago

You just have to study 8 hours per day to score 95% above And also if you didn't started for solving sample papers then start it from now. Do PYQs Do Ncert selected questions Do sample papers Do Ncert exampler 8 hours study with consistency Only these 5 things and you can achieve your goal

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ANSWER

Felming right hand rule

Posted by Nitin Yogi 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Dhanisha Rathore 3 years, 1 month ago

Fleming's right-hand rule gives which direction the current flows. The right hand is held with the thumb, index finger and middle finger mutually perpendicular to each other (at right angles), as shown in the diagram. The thumb is pointed in the direction of the motion of the conductor relative to the magnetic field

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ANSWER

Newly formed DNA copies may not be identical at times. Give one reason?

Posted by Anshika Sharma 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Vaishnavi Vyas 3 years, 1 month ago

Mutation...Due to mutation the arrangement of genes is changed which may result in variations

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ANSWER

An electrical fuse is rated at 2A. What is meant by this statement?

Posted by Vineet Chaudhary 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Rupali Shukla 3 years ago

It means you have a fuse that have capacity to pass the current of 2 ampere (A)

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Jitendra Mishra 3 years, 1 month ago

It means that you have a wire whose maximum bearing capacity is 2 ampere and if you will increase the current then the wire will melt and the circuit will break with a sparkling. IS THIS ANSWER HELPFUL?

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Anshika Sharma 3 years, 1 month ago

It means that the fuse can bear max 2 ampere of current after which its wire will melt and the circuit will break. Hope it helped u.

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